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2. Weld nut - Wikipedia

   en.wikipedia.org/wiki/Weld_nut

   Dual hole or twin piloted nuts are designed for use where there is a need for tapped holes close together. [3] Four Projection Weld Nuts. Four projections designed to fuse simultaneously so each projection flows and seats properly. [4] Single Tab Weld Nuts. Single Projection Weld Nut. Single button projection weld nut for use on heavier gage ...

3. Barrel nut - Wikipedia

   en.wikipedia.org/wiki/Barrel_nut

   It is used to bolt thin sheet metal parts to larger, often billet or forged, parts. The barrel nut is a round slug, or formed sheet metal part with threads perpendicular to the length of the nut. The nut sits in a hole inside the forging and a standard bolt is threaded into the barrel nut from outside the sheet metal. They are preferred over a ...

4. Oxy-fuel welding and cutting - Wikipedia

   en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

   In short, oxy-fuel equipment is quite versatile, not only because it is preferred for some sorts of iron or steel welding but also because it lends itself to brazing, braze-welding, metal heating (for annealing or tempering, bending or forming), rust, or scale removal, the loosening of corroded nuts and bolts, and is a ubiquitous means of ...

5. Nut (hardware) - Wikipedia

   en.wikipedia.org/wiki/Nut_(hardware)

   Weld nut: Designed to be welded to another object Well nut: Rawlnut or Rawl nut (proprietary) Used to blindly fasten a piece and to seal the bolt hole Wing nut: Butterfly nut Has two large metal "wings", one on each side, so it can be easily tightened and loosened by hand without tools

6. Fastener - Wikipedia

   en.wikipedia.org/wiki/Fastener

   Structural bolt DIN 6914 with DIN 6916 washer and UNI 5587 nut. A threaded fastener has internal or external screw threads. [7] The most common types are the screw, nut and bolt, possibly involving washers. Other more specialized types of threaded fasteners include captive threaded fasteners, stud, threaded inserts, and threaded rods.

7. T-nut - Wikipedia

   en.wikipedia.org/wiki/T-nut

   T-nuts. The left one has been inserted in the wood and a bolt has been screwed in from the other side. A T-nut, T nut, or tee nut (also known as a blind nut, [1] which can however also refer to a rivet nut or an insert nut, and likewise drive-in nut [2]) is a type of nut used to fasten a wood, particle or composite materials workpiece, leaving a flush surface.